Describe the bug
Tried to spark a nether portal to correct for it changing where it lets out in the nether. When I attempted to open the nether portal side back to the overworld it opened properly and rendered the other side but crashed a few moments later. (Using Better Portals.

Expected behavior
Not crashing.

Versions
Entity Culling: EntityCulling-1.12.2-4.0.5
Better Portals: BetterPortals-0.3.7.7
Optifine: OptiFine_1.12.2_HD_U_G5
Forge: 1.12.2-forge-14.23.5.2854
Minecraft: 1.12.2

Other
Crash report (upload as a file):
crash-2021-03-25_06.28.13-client.txt

Latest log (upload as a file): latest.log
Singleplayer

Might be fixed in v1.12.2-4.1.2
Though keep in mind EntityCulling most likely won't work correctly with mods like Better Portals